"""统一配置应用、Uvicorn 和第三方库日志"""

import logging
import sys
from pathlib import Path

from loguru import logger

LOG_PATH = Path(__file__).resolve().parents[2] / "logs" / "app.log"
LOG_FORMAT = "{time:YYYY-MM-DD HH:mm:ss.SSS} | {level: <8} | {extra[thread_id]} | {extra[node]} | {message}"
_initialized = False


class InterceptHandler(logging.Handler):
    """将标准 logging 转发到 Loguru，兼容第三方库"""

    def emit(self, record: logging.LogRecord) -> None:
        # FastAPI 已记录的异常不再由 Uvicorn 重复打印堆栈
        if record.exc_info and getattr(record.exc_info[1], "_logged_by_api", False):
            return
        try:
            level = logger.level(record.levelname).name
        except ValueError:
            level = record.levelno
        logger.opt(exception=record.exc_info).log(level, record.getMessage())


def setup_logging() -> None:
    """应用启动或独立测试入口调用，多次调用不会重复添加输出"""
    global _initialized
    if _initialized:
        return

    LOG_PATH.parent.mkdir(parents=True, exist_ok=True)
    logger.remove()
    logger.configure(extra={"thread_id": "-", "node": "-"})

    options = {
        "level": "INFO",
        "format": LOG_FORMAT,
        "enqueue": True,
        "diagnose": False,
        "backtrace": False,
    }

    logger.add(sys.stderr, colorize=True, **options)
    logger.add(
        LOG_PATH,
        rotation="20 MB",
        retention="14 days",
        compression="zip",
        encoding="utf-8",
        **options,
    )

    # 清理已有输出处理器，让标准日志只经过根处理器输出一次
    logging.basicConfig(handlers=[InterceptHandler()], level=logging.INFO, force=True)
    for name in list(logging.root.manager.loggerDict):
        existing = logging.getLogger(name)
        existing.handlers.clear()
        existing.propagate = True
    _initialized = True